hi, this Ramesh
i’m new to xibo
when schedule content there is any starting time and ending time to that content
When you use Schedule Now, as the name suggests you only specify amount of time you’d like to display specific layout, and start time is well Now (or as soon as device will download content to be more specific)
On schedule page when you create new event you do specify the start and end time.
Layout itself has media durations, when you add media items you do specify those, which will define how long this layout will be displayed (then depending on the schedule it will be reloaded and displayed again or changed to another layout)
If you have questions about it please ask.
If you are new to Xibo, perhaps go through this guide which should let you know the basic Xibo features - http://xibo.org.uk/manual/en/guide_getting_started_cafe_menu.html